info:eu-repo/semantics/article
Absorptive one-loop corrections and the complex-mass prescription for the Δ resonance propagator
Fecha
2012-07Registro en:
Barbero, César Alberto; Mariano, Alejandro Edgardo; López Castro, G.; Absorptive one-loop corrections and the complex-mass prescription for the Δ resonance propagator; IOP Publishing; Journal Of Physics G-nuclear And Particle Physics; 39; 8; 7-2012; 850111-8501110
0954-3899
CONICET Digital
CONICET
Autor
Barbero, César Alberto
Mariano, Alejandro Edgardo
López Castro, G.
Resumen
It is shown that the absorptive one-loop self-energy corrections to the δ ++ propagator can reproduce the complex-mass prescription for its resonant form. The effects of absorptive corrections beyond the ones considered in the complex-mass (CM) prescription for the propagator turn out to be negligible in the cross section of π +p elastic scattering. This result brings support to the CM approximation used in previous calculations to include the Δ baryon in processes involving the production of the πN system in the resonance region. © 2012 IOP Publishing Ltd.